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PLANT PROTECTION 1 – Pests, Diseases and Weeds

PLANT PROTECTION 1 – Pests, Diseases and Weeds

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<strong>PLANT</strong> <strong>PROTECTION</strong> 1 – <strong>Pests</strong>, <strong>Diseases</strong> <strong>and</strong> <strong>Weeds</strong><br />

INSECT ORDER<br />

Common names of members<br />

HEMIPTERA<br />

Mealybugs<br />

DISTINGUISHING FEATURES<br />

Life cycle<br />

Damaging stages & method of feeding<br />

ADULT<br />

Body<br />

Wings<br />

Antennae<br />

Mouth<br />

NYMPH<br />

LIFE CYCLE<br />

DAMAGING STAGES &<br />

METHOD OF FEEDING<br />

<strong>PLANT</strong> DAMAGE<br />

(not exhaustive)<br />

DIRECT FEEDING DAMAGE<br />

Leaves Wilting, eg<br />

Death, eg<br />

Roots, Death, eg<br />

buds<br />

INDIRECT DAMAGE<br />

Honeydew (sooty mould), eg<br />

Disfigurement, eg<br />

BENEFICIAL MEALYBUGS<br />

HEMIPTERA<br />

Armoured scales<br />

Soft scales<br />

HEMIPTERA<br />

Whitefly<br />

ISOPTERA<br />

Termites<br />

‘White ants’<br />

ADULT<br />

Wings<br />

Antennae<br />

Mouth<br />

NYMPH<br />

LIFE CYCLE<br />

DAMAGING STAGES &<br />

METHOD OF FEEDING<br />

ADULT<br />

Wings<br />

Antennae<br />

Mouth<br />

Size<br />

Other<br />

NYMPH<br />

LIFE CYCLE<br />

DAMAGING STAGES &<br />

METHOD OF FEEDING<br />

ADULT<br />

Worker<br />

Soldier<br />

King & Queen<br />

NYMPH<br />

LIFE CYCLE<br />

DAMAGING STAGES &<br />

METHOD OF FEEDING<br />

DIRECT FEEDING DAMAGE<br />

Leaves Yellowing, eg<br />

Defoliation, eg<br />

Fruit Disfigurement, eg<br />

Stems, Leaf fall, eg<br />

trunks Dieback, eg<br />

INDIRECT DAMAGE<br />

Honeydew (soft scales), eg<br />

Loss of market, eg<br />

BENEFICIAL SCALE<br />

DIRECT FEEDING DAMAGE<br />

Leaves Mottling, eg<br />

General May not cause much<br />

Damage, eg<br />

Death of seedlings, eg<br />

Reduced vigour, eg<br />

INDIRECT DAMAGE<br />

Honeydew (sooty mould), eg<br />

BENEFICIAL WHITEFLY<br />

DIRECT FEEDING DAMAGE<br />

Tubers Tunnels, eg<br />

Trunks, Tunnels, eg<br />

branches,<br />

roots<br />

INDIRECT DAMAGE<br />

Weakening of structures, eg<br />

BENEFICIAL TERMITES<br />

220 Insects <strong>and</strong> allied pests - Review questions <strong>and</strong> activities

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